Xa iinjineli zicacisa insimbi engenasici kulawulo lwe-mission-critical fluid okanye i-high-wear-roating components, abakhethi nje ukuxhathisa umhlwa-babheja kwi-dimensional stability phantsi kwe-thermal cycling, imfezeko ye-microstructural emva komatshini, kunye ne-batch-to-batch repeatability kwiipropati zomatshini. Yiyo loo nto ukhetha okulungileyo steel stainless metal naliti yokubumba umzi-mveliso ayingomthamo okanye ixabiso lodwa. Kumalunga noqeqesho lwe-metallurgical, ukulandeleka kwenkqubo, kunye namava aqinisekisiweyo aneendawo ezisilela kwintlekele ukuba i-porosity idlula i-0.8% okanye i-grain boundary carbide precipitation shifts nge-5 ° C ngexesha lonyango lobushushu.
Kutheni i-Stainless Steel i-MIM ifuna Ngakumbi kuneMngundo kunye neSiko
Siye sabona iiprojekthi ezininzi kakhulu zivaliwe-kungekhona ekuphononongweni koyilo, kodwa ekuhlolweni kwenqaku lokuqala-kuba umthengisi uphatha i-MIM yensimbi engenasici njenge-316L ye-bar stock. Iindlela zokungaphumeleli kwehlabathi lokwenyani zibalisa ibali: i-warpage kwimizimba yevalvu ebhityileyo emva kokuntywila; ubunzima obungahambelaniyo kwi-piston rod ye-12-mm-diameter ngenxa yokungalingani kwekhabhoni; umngxuma womphezulu kwizindlu zempompo emva kweeyure ezingama-48 zovavanyo lwesitshizi setyuwa kuba ukususwa kwesibophelelo kushiye intsalela yesalfure.
I-MIM yensimbi engenastainless isebenza kuphela xa iimeko ezintathu zilungelelaniswa: Okokuqala, imathiriyeli ekrwada kufuneka ibe ngumgubo wegesi-atomized kunye ne-O₂ ≤ 150 ppm kunye ne-spherical morphology> 95%-hayi imixube ye-atomized scrap ethengiswa njenge-"MIM-grade." Okwesibini, ukudibanisa kufuneka kulandele iprofayili ye-thermal enezigaba ezininzi ezilinganisiweyo ngeqashiso ngalinye, kungekhona ishedyuli ye-oven esisigxina. Okwesithathu, i-sintering ifuna i-vacuum okanye umoya we-hydrogen ococekileyo kunye nendawo yombethe ≤ -60 °C. Yeqa enye, kwaye ufumana iinxalenye ezidlula iitshekhi ze-CMM kodwa i-fracture kwi-72% yoxinzelelo olulinganisiweyo lokuqhuma.
Yingakho siphatha yonke i-MIM yensimbi engenasici njengenkontileka ye-metallurgical-kungekhona ukuqhuba imveliso. Siqala ngokulandelelwa komgubo oqinisekisiweyo ukuya kwinani lebhetshi enyibilikayo, qinisekisa ukutshiswa kwe-binder usebenzisa i-TGA-DSC curves, kunye nokubeka iliso kwi-amosphere ye-sintering furnace ngexesha lokwenyani kunye ne-quadrupole mass spectrometry. Akukho ngaphandle.
Apho Ubunjineli obuchanekileyo budibana neNyaniso yoShishino
Uninzi lweefektri ze-MIM zensimbi ezingenasici zigqwesa kwiimeko zokubukela okanye izixhobo zamazinyo-amacandelo angaphantsi kwe-50g, uxinzelelo oluphantsi, akukho lutywino olusebenzayo. Kodwa usetyenziso lwemizi-mveliso lufuna ngaphezulu: iivalvu zoxinzelelo ezisebenza kwibhari ezingama-420, izindlu zesilinda ezine-±5 µm zokuconcentricity ngapha kwe-200 mm ubude, iirola ezikwiziko le-winch ezithwele imithwalo eguqukayo ye-12-toni. Le ayiyomingeni yejometri. Ziingxaki zokuziphatha ngokwezinto eziphathekayo.
Sihambise ngaphezu kwe-18,000 yensimbi engenasici ye-MIM yezixhobo ze-hydraulic systems apho ukuvuza kuthetha ukuvalwa kwenkqubo-kwaye apho iplagi enye engaphumelelanga ye-AMS 5387 cobalt-alloy ibangele i-$ 240k ngexesha lokuphumla. Isisombululo sethu? Ukusetyenzwa kweHybrid. Sibumba undoqo wejiyometri, emva koko umatshini we-CNC-umatshini obalulekileyo wokutywina ukuya kwi-Ra 0.2 µm kwaye ucinezele-ulungelelanise imikhono eqinileyo eqinileyo kwimibhobho ethwala imithwalo. Oku asikokulalanisa-kukuchaneka kokumaleko.
Indawo yethu ehambelana ne-ISO iqhuba imigca ye-MIM enikezelweyo ye-17-4PH, i-420 ingenasici, kunye namabanga aqhelekileyo aphindwe kabini-nganye inokuphatha umgubo ohlukeneyo, ukugcinwa kwezixhobo, kunye neziko lokutshisa. Akukho ungcoliseko olunqamlezayo. Akukho zibophelelo ekwabelwana ngazo. Iqashiso ngalinye lifumana ukuqinisekiswa okugcweleyo kwekhemistri nge-OES, umlinganiselo woxinaniso, kunye novavanyo lokuqina kwiisampulu zamangqina ezitsalwa kwitreyi yokuntywila njengenxalenye yemveliso.
Eyona nto uyifumanayo-hayi nje le nto uyithembisileyo
- Ukulandeleka kwezinto: Izatifikethi zomgubo, iifayile zelog ye-sintering, kunye neengxelo ze-CMM ezidityaniswe kwi-ID yecandelo ngalinye-hayi nje amanani ebhetshi
- Akukho "standard" ukunyamezelana: Sicaphula i-GD&T callouts ngefitsha nganye-umzekelo, ukunyamezela indawo Ø0.05 mm kwimingxuma yokukhwela, flatness ye-0.015 mm yokutywinwa kobuso-ngokusekelwe kwizifundo zobuchule benkqubo, hayi iitafile zekhathalogu.
- Ukuqinisekiswa okusebenzayo kubandakanyiwe: Yonke iodolo yeenqanawa ezineerekhodi zovavanyo lwe-hydrostatic (yeendawo ezinoxinzelelo) kunye nemephu erhabaxa yomphezulu-akukho ntlawulo eyongezelelweyo
- Ingxelo yoyilo lwe-MIM kwiiyure ezingama-48: Hayi nje “olu donga lubhityile kakhulu”—kodwa ubungqingqwa obuchanekileyo bebakala lakho elichaziweyo, imephu yevektha eqikelelweyo eqikelelweyo, kunye nendawo ecetyisiweyo yesango ukunqanda imigca yeweld kwiindlela ezibalulekileyo
Asiboneleli ngeenkonzo ze-“MIM kuphela” okanye “zoomatshini kuphela”. Sinikezela umsebenzi-imveliso yokuqala. Ukuba indawo yakho yentsimbi engenastainless idinga ukuntsokotha okukufutshane kwe-net-shape kunye nemfezeko yomphezulu owenziwe ngoomatshini, sidibanisa zombini-ngaphandle kwezandla, ngaphandle kokulahleka kwedatha, ngaphandle kokugxeka enye inkqubo xa kukho into engalunganga.
Ukukhetha Ngaphaya Kwencwadana
Buza nayiphi na into enokwenzeka steel stainless metal naliti yokubumba umzi-mveliso le mibuzo mithathu-kwaye ujonge ukuba iphendula njani:
- “Ndibonise izigodo ezintathu zokugqibela zomlilo ze-17-4PH. Zenzeka phi ioksijini spikes, yaye liliphi inyathelo lolungiso elathatyathwayo?”
- "Ndihambise kwiprothokholi yakho yokususa isibophelelo sendlu yegiya eyi-3.2 mm ubukhulu. Ngowuphi umlinganiselo ophezulu wokufudumeza owuvumelayo ukuba ube ngaphantsi kwe-350 ° C-kwaye ngoba?"
- "Ukuba umzobo wethu ubiza i-HRC 42-44 kwisitulo sevalve esinama-420, ngaba uyayifezekisa ngokuguga emva kwe-sinter-okanye uyayihlengahlengisa iprofayile ye-sintering kwaye uthembele kukuqina kwemvula kuphela?"
Ukuba impendulo ayicacanga, igeneric, okanye iireferensi "imigangatho yeshishini" ngaphandle kokucaphula i-ASTM B964 okanye iMPIF Standard 35, qhubeka ujonge. Intsimbi echanekileyo ye-MIM inegumbi elinguziro lentelekelelo.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. yakha iindawo ezihlala zivaliwe kwi-200 ° C, zijikeleze ngaphandle kwe-galling kwi-1500 RPM, kwaye zisinde kwimijikelezo yoxinzelelo lwe-10,000 ngaphandle kokuqaliswa kwe-microcrack. Senza ngokuphatha yonke igram ye-powder stainless steel njenge-metallurgical variable-kungekhona i-commodity. Ndwendwela https://www.tsingtaocnc.com ukuphonononga amaxwebhu obugcisa, ukukhuphela izatifikethi zemathiriyeli, okanye ungenise icandelo lakho elilandelayo lentsimbi echanekileyo echanekileyo kuhlalutyo lokwenziwa.
